Automobile-jack.



ROLLO H. BEEBE, F WATERLOO, IOWA.

AUT OMOBILE-J'ACK.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed April 5, 1915. Serial No. 19,143.

7 To on whom it may concern:

Be it known that I, Home H. BEEBE, a citizen of the United States ofAmerica, and a resident of WVaterloo, Blackhawk county, Iowa, haveinvented certain new and Useful Improvements in Automobile- Jacks, ofwhich the following is a specification.

My invention relates to improvements in lifting-jacks, and particularlyto that type of jacks which is designed for use in lifting automobiles,and the object of my improvement is to provide actuating mechanism forthe jack which, while operating the jack with an upward step-by-stepmovement will permit the lowering of the load with a controlledcontinuous movement. This object I have accomplished by the means whichare hereinafter described and claimed, and which are illustrated in theaccompanying drawings, in which:

Figure 1 is a side elevation of my improved lifting jack, with partsthereof sectioned away. Fig. 2 is an elevation of the opposite side ofsaid jack, also showing parts sectioned or broken away.

Similar numerals of reference denote corresponding parts throughout theseveral views.

The numeral 5 denotes a vertical hollow standard integral with acircular base 6 and having a short vertical slot 8 near its upper endwith a pair of horizontally projecting spaced vertical integral plates 9of which only one is shown, the other being broken away. ard is slidablyseated a rack 1, having a rotatable curved or concave bearing block 2rotatably mounted on its upper end by means of a screw pivot 3. The rackteeth 4 are alined in registration with the vertical slot 8 in thestandard 5. A pinion 11 in mesh with the rack teeth 4, is fixedlymounted on a horizontal shaft 10, which latter is rotatably mounted inbearing openings in the brackets 9. One end of said shaft 10 extendsoutwardly beyond its bearing on that side and the relatively large diskor friction-wheel 26 is secured thereon by means of a key 31. A pawl 12is pivoted on a stud 32 projecting from the inner face of one bracket 9and is adapted to engage the teeth 4 on the rack 1. An arm mounted toswing upand down vertically within a loop 16 mounted on the inner faceof one of a the brackets 9 has its inner end bent to form Within thehollow 7 of said standa part engaging the inner face of the pawl 12,while its other end has a bent over lip or finger piece 15. A smallspring 17 is mounted on the stud 32 and is carried around the pawl 12 toexercise a yielding tension thereon to keep the pawl yieldingly engagedwith the rack teeth 4. When the arm 14 is depressed the pawl 12 is movedaway out of engagement with said rack.

Referring now to Fig. 2, the disk 26 has a clrcumferential edgechanneled to provide spaced flanges 27 The circumferential rim of saidwheel 26'is surroundedby means of a band brake composed of an elasticmetal band 24 having a lining layer 25 composed of some highlyfrictional substance secured thereon to lie in contact with the rim. Theends of the band 24 are respectively pivotally secured on pintles 21 and22 which are secured across the end bifurcations 20 of the socket 18,which contains the detachable handle bar 19. A coiled spring 29isconnected between hooks 30 and 28 mounted respectively on said socket18 and on the band brake 24. A stop 23 on the bracket 9 restricts upwardmovement ofthe socket 18 i and the handle bar 19. When the handle 19 ispushed downwardly, said band-brake is tightened about the friction wheel26 and the latter with the shaft 10 and the pinion 11 is rotated toelevate the rack 1 with a step-by-step movement as the handle is movedalternately up and down. To lower the rack with a controlled continuousmovement, the arm 14 is pushed down to release the pawl 12 from theteeth 4, and the hang dle 19 held in a position which will com" pressthe band-brake sufiiciently upon the wheel 26 to prevent the wheel fromrotating too rapidly, and in this way the load may be gradually loweredwithout resorting to the delay and extra manipulation of step-bystepmovements.

The strip or layer 25 which. is mounted on the inner face of theband-brake 24 serves to add friction to the action of the brake, to moreeffectually control its action. When the arm 14 is released the spring17 returns the pawl to engagement with the rack-teeth. The coiled spring29 serves to keep the handle 19 in proper position for use, and thebrake-band may be eased up or loosened about the wheel 26 by swingingparts of my device may bemade, without,

however, departing from the principles'of" or the scope of protection ofmy invention.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is:

l. A lifting-jack, comprising a rack mounted and supported for oppositemovements, a pinion in mesh with said rack, a friction disk adapted torotate said pinion, a band-brake operatively mounted upon said disk tobe frictionally engaged releasably therewith, means connected yieldinglyto said band-brake to keep it under contact with said disk resiliently,a pivotally-mounted pawl releasably engaging said rack, and meansfor-yieldingly resiliently retaining said pawl in engage ment with saidrack.

2. A lifting-jack, comprising a rack mounted and supported for oppositemove- '1'i1ents',a pinion in mesh with said rack, a rotatablefriction-disk adapted to rotate said pinion, a band-brake operativelyengaged about said disk, a hand-lever having independent connections tothe ends of said band-brake, a stop for limiting the movement of saidlever in one direction, a yieldable resilient body connected to andadapted to exert a tension upon said lever when the latter is moved inone direction, a pawl releasably engaged with said rack, and means forreleasing said pawl from said rack.

Signed at Waterloo, Iowa, this 22d day of March, 1915.

ROLLO H. BEEBE. Witnesses:

GEo. G. KENNEDY, PEARL STANTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01' Patents,

Washington, D. C.

